Genetic variability, correlation and path coefficient analysis for yield and yield components in transplant aman rice (Oryza sativa L.)

Roy, Ripon Kumar; Majumder, Ratna Rani; Sultana, Shahanaz; Hoque, M. E.; Ali, Sajid

doi:10.3329/bjb.v44i4.38566

Cited by 12 publications

(15 citation statements)

References 9 publications

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“…Number of productive tillers per plant showed positive and moderate direct in MDU 6 × VGD1, whereas it was positive and high in ISM × VGD 1. The similar results were confirmed by Chhangte and Devi (2019) for moderate direct effect and by Roy et al, (2015) for high direct effect. The residual effect of the cross MDU 6 × VGD 1 is very high (0.887) implies that some other character also contributing towards the single plant yield apart from the characters under study.…”

Section: Resultssupporting

confidence: 85%

Genetic variability, correlation and path coefficient studies in F2 generation of short slender aromatic and medium slender non-aromatic rice (Oryza sativa L.)

2020

EJPB

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Genetic variability, correlation, direct and indirect effects between yield and yield component traits were studied in the F 2 population of MDU 6 × VGD 1 and Improved Samba Mashuri × VGD 1 for six characters. Number of filled grains per panicle and single plant yield recorded high PCV, GCV and high heritability coupled with high genetic advance as per cent mean in both the crosses which indicated the presence of additive gene action and selection may be effective for these traits. Number of productive tillers per plant had moderate PCV, GCV, heritability and genetic advance as per cent mean in both crosses. Number of productive tillers per plant also had significant positive correlation with maximum direct effect on single plant yield in both the crosses. This indicated that the selection for high number of productive tillers per plant will bring concurrent improvement in yield as well.

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Section: Resultssupporting

confidence: 85%

Genetic variability, correlation and path coefficient studies in F2 generation of short slender aromatic and medium slender non-aromatic rice (Oryza sativa L.)

2020

EJPB

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“…Genetic variability for productive tiller per plant and number of grains per panicle was reported by Singh et al (2012). High heritability values in rice were also observed by Roy et al (2015). The high value of heritability for all the traits suggests that all these traits are under genetic control, i.e.…”

Section: Resultsmentioning

confidence: 87%

“…This indicated that the suppressive effect of the environment modified the phenotypic expression of these characters by reducing phenotypic correlation values. Roy et al (2015) also reported higher magnitude of genotypic correlation than respective phenotypic correlations between various characters in rice. Grain yield had significant positive correlation with effective tillers per hill (0.937**), panicle length (0.998**), filled grain per panicle (0.913**) and thousand grain weight (0.997**) and significant negative correlation with days to 50% flowering (−0.645**), days to maturity (−0.648**) and spikelet sterility (−0.862**).…”

Section: Resultsmentioning

confidence: 94%

“…The positive correlation of grain yield with various traits were supported by the finding of earlier workers viz. for 1000-grain weight, for effective tillers per m 2 and panicle length (Roy et al 2015), for productive tiller per plant (Gapikannan and Ganesh 2013) and for number of grains per panicle (Vanisree et al 2013). ** = Significant at 1% level and * = Significant at 5% level, PH = Plant height (cm), DFF = Days to 50% flowering (days), ET/h = Effective tillers per hill (no.…”

Section: Resultsmentioning

confidence: 99%

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Genetic interrelationship among yield and its components in rice hybrids

Hasan

Kulsum

Mohiuddin³

et al. 2019

Bangladesh J. Bot.

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The present investigation was conducted to elucidate the interrelationship among various yield and yield contributing traits. Among the traits plant height, days to 50% flowering, days to maturity, filled grain per panicle and spikelet sterility showed high genotypic variance. Effective tillers per hill, filled grain per panicle, spikelet sterility had high genotypic coefficient of variation with high heritability and high genetic advance per cent of mean. Effective tillers per hill, panicle length, filled grain per panicle and 1000-grain weight exhibited significant positive association with grain yield. Path coefficient analysis also revealed that plant height, effective tillers per hill, panicle length and 1000-grain weight had higher direct effect on rice yield (t/ha). Days to 50% flowering, days to maturity and spikelet sterility possessed moderate to low negative direct effect on rice yield. All together with the genetic variability, correlation and path analysis revealed that plant height, effective tillers per hill, panicle length, filled grain per panicle and 1000-grain weight were the most important yield component in rice hybrids.

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“…Rajkumar and Ibrahim (2015) revealed that panicle exertion rate had positive association with out-crossing rate. Similarly Roy et al (2015) observed significant positive association between yield and its contributing traits in rice. Stigma exertion rate had the significant positive association with panicle exertion rate (0.995**), angle of florate opening (0.791**), duration of florate opening (0.963**), filament length (0.778**), stigma length (0.784**) and stigma breadth (0.764**) indicating high stigma exertion rate with high out crossing rate.…”

Section: Correlation Studiesmentioning

confidence: 80%

Assessment of Variability for Floral Characteristics and Out-Crossing Rate in CMS Lines of Hybrid Rice

et al. 2019

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The present investigation was aimed to clarify the interrelationship among various floral traits and out crossing rates. High mean value, range of variability and genotypic variance were observed for all the traits except anther length and breadth, stigma length and breadth. Close differences between genotypic and phenotypic variances and genotypic and phenotypic coefficient of variations were observed for all the traits. Considering all genetic parameters, selection based on panicle exertion rate, angle of florate opening, duration of florate opening, anther length, stigma exertion rate and out crossing rate seemed to be effective for the improvement of CMS lines. Out crossing rate had significant positive correlation with panicle exertion rate, angle of florate opening, duration of florate opening, filament length, stigma length, breadth and exertion rate exhibited interesting results, indicating selection with these traits might be possible without compromising seed yield loss. On the basis of direct selection through panicle exertion rate, angle and duration of florate opening, filament length and stigma exertion rate would significantly improve seed yield of CMS lines. Based on mean, range, genetic parameters, correlation coefficient and path coefficient values, direct selection of eight CMS lines IR79156A, BRRI7A, IR75608A, BRRI13A, BRRI35A, BRRI48A, BRRI50A and BRRI53A might be fruitful as good floral characteristics with high out crossing rate of CMS lines. Bangladesh Rice j. 2018, 22(2): 31-39

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Genetic variability, correlation and path coefficient analysis for yield and yield components in transplant aman rice (Oryza sativa L.)

Cited by 12 publications

References 9 publications

Genetic variability, correlation and path coefficient studies in F2 generation of short slender aromatic and medium slender non-aromatic rice (Oryza sativa L.)

Genetic variability, correlation and path coefficient studies in F2 generation of short slender aromatic and medium slender non-aromatic rice (Oryza sativa L.)

Genetic interrelationship among yield and its components in rice hybrids

Assessment of Variability for Floral Characteristics and Out-Crossing Rate in CMS Lines of Hybrid Rice

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